JoBoEVD/UglifyJS
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restrict usage scope of this

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This commit is contained in:
alexlamsl 2017-04-24 01:50:24 +08:00
parent 7a06b1427c
commit 74e3537c75
1 changed files with 8 additions and 7 deletions
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15
test/ufuzz.js
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@ -630,13 +630,16 @@ function _createExpression(recurmax, noComma, stmtDepth, canThrow) {
);
break;
default:
if (rng(4) == 0) s.push('function ' + name + '(){');
else {
if (VAR_NAMES.indexOf('this') < 0) VAR_NAMES.push('this');
s.push('new function ' + name + '(){');
var instantiate = rng(4) ? 'new ' : '';
s.push(
instantiate + 'function ' + name + '(){',
strictMode()
);
if (instantiate) for (var i = rng(4); --i >= 0;) {
if (rng(2)) s.push('this.' + getDotKey() + createAssignment() + _createBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ';');
else s.push('this[' + createExpression(recurmax, COMMA_OK, stmtDepth, canThrow) + ']' + createAssignment() + _createBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ';');
}
s.push(
strictMode(),
createStatements(rng(5) + 1, recurmax, canThrow, CANNOT_BREAK, CANNOT_CONTINUE, CAN_RETURN, stmtDepth),
'}'
);
@ -776,7 +779,6 @@ function _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) {
return '(' + createUnarySafePrefix() + '(' + _createSimpleBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + '))';
case 2:
assignee = getVarName();
if (assignee == 'this') assignee = 'a';
return '(' + assignee + createAssignment() + _createBinaryExpr(recurmax, noComma, stmtDepth, canThrow) + ')';
case 3:
assignee = getVarName();
@ -843,7 +845,6 @@ function getVarName() {
function createVarName(maybe, dontStore) {
if (!maybe || rng(2)) {
var name = VAR_NAMES[rng(VAR_NAMES.length)];
if (name == 'this') name = 'a';
var suffix = rng(3);
if (suffix) {
name += '_' + suffix;